TEMA: KideShoutbox visible for everyone, but only admins can write

Good evening.
I'd like to say before that I'm French and there's a long time I haven't spoken English. So, sorry for the mistakes

I'm the webmaster of a football website and we're using the KideShoutbox to comment on football game. And after the game, we turn off the shoutbox. For the moment, no one can register on the website and only admins can write on the shoutbox.
In the future, I'd like to create a community with Community Builder, and have somme others extensions such as Komento.
But I don't want that future members can write in the shoutbox.
Is there a possibility to limit the shoutbox access to the only admins of the website ?